Roof for portable buildings



May 31, 1932. p N N|SSEN 1,861,062

ROOF FOR PORTABLE BUILDINGS Filed July 8, 1929 Fig. 1. 13

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/ ArroR/vfy Patented May 31, 1932 amiral) STATES PATENT! orifice PETERNORMAN NrssEN, or HomntsnoN,I ENGLAND Roon1 non PORTABLE BurrmrNas4Application filed July 8, 1929, Serial No. 376,720, and in Great BritainJuly 10, 1928.

This invention relates to the roofs of portable buildings` and is amodification and simplication of the roof structure described in thespecification to British Patent No.

c 129,777 and it has for its object a construction of conical roof foruse with circular buildings such, for instance, as the mud huts usedbythe natives of tropical countries,

which 'huts are at the present time roofed lo with various vegetablematerial which not only harbours vermin and is consequently eminentlyunsanitary but has a very transitory life. Y ccording to the presentinvention the 15 roof comprises a main roof ring ot substantially thediameter of the wall of the building, a secondary ring of equal diameterto, spaced apart from and disposed below said main roof ring, a centralsupport compris- :1,1 ing two superimposed cone-shaped rings spaced at asuitable distance apart by stays or uprights, a plurality of sheetsadapted to be grouped and arranged to form a ceiling, the upper ends ofsaid sheets being sup- -v ported on and fixed to the lower of the conedrings forming part of the central support, their lower ends beingsupported on the secondary ring, and a plurality of sheets adapted to begrouped and arranged to form the l?" roof, the upper ends of said sheetsbeing supported on and iXed to the upper of the coned rings forming partof the central support, their lower kends being supported by and Xed tothe main roof ring. i5 In the accompanying drawings which illustratethis invention Figure l is a view of a hut iitted with the improved roofwhich is shown partly in section.

Figure 2 is a broken view in section on an c enlarged scale showing themethod of positioning the lower ends of the roong and ceiling sheets,and Figure 3 isa similar view showing the attachment of the roofing andceiling sheets and the cap or cowl to the central support.

Throughout the views similar parts are marked with like numerals ofreference.

Theroof consists of a roof proper l and a D ceiling y2 each of which'ismade up `of a pluywardly as shown in Figure 3, the cowl being rality ofsheets of triangular form. At the edges of these sheets which may be ofany suitable metal or other suitable material is aV single corrugation 3so that when the adjacent sheets are in place and overlap the 55corrugations form an interlock. The outer or lower ends of they rooiingsheets are supported by and fixed to a ring 4, the lengths f of saidsheets being such as will allow of a substantial overhang from the wall5 of the 60 hut, said ring being preferably formed in a plurality oi'sections for convenience in packing and storage. The uppery ends of therooiing sheets are supported by and fixed by bolts 6 (Figure toacone-shaped ring 6 which Jforms the upper part of a central support.The upper ends of the ceiling sheets 2 are supported and tiXed to acone-shaped ring 8 which forms the lower end of the central support. Thelower ends of the ceiling sheets are supported on a secondary ring 9spaced apart from the ring 4 by means of distance pieces 10.

rIhe upper and lower rings 7 and 8 of the central'support are spaced ata suitable disvtance apart as to provide the desired cavity between theceiling and the roof and are positicned by means of a plurality ofvertically disposed metal stays l1.

The apex of the roof is covered in by a cowl 12 and in order to providean air outlet said cowl may be supported on the upper ends of the staysll which for this purpose are continued beyond the ring 7 and bent overoutsecured to said strips by the bolts 13.

The upper ends of the ceiling sheets 2 are preferably secured inposition by an L-shaped ring 14- placed around the stays l1 to which itis secured by bolts 15, but if desired said ceilingsheets maybe securedto the ring 8 by lbolts or the like.,

i The lower ends of the roong sheets are secured to the main rootv ring4 by means of clips 16 which" are adapted to engage the horizontal'ribof said ring and are secured to the sheets by means of bolts` or thelike 17 as shown in Figure 2.

Tlieroofsforming the subject of this in- A vention are chieiy intendedto be used in-coni the aperture at the base of the central support withline wire gauze, the ybuilding may e made mosquito prooi.

The internal diameter of the central sup-V port mustbe such as willprovide ample room or a man to stand within it, in order to enable theroofing and ceiling sheets to be secured to their respective supportingrings.

lVhat I claim is 1. In a roof for circular buildings the conibination ofa skelet-on framework comprising a plurality of vertically arrangedbars, a ring secured to the lower ends of said bars, a second ringsecured to the upper ends of said bars, a supplementary ring secured tosaid bars a short distance below the last named ring, a central supportcomprising two cone-shaped rings arranged one above the other, means forspacing said rings at a suitable distance apart comprising a plu ralityof vertically disposed stays, a plurality of sheets of triangular formadapted to be grouped and arranged to form a ceiling the upper ends ofsaid sheets being supported 'on the lower of the cone-shaped ringsforniing the central support, means comprising a clamping ring forsecuring said sheets to the central support, their lower ends resting onthe supplementary ring, a plurality of sheets of triangular form adaptedto be grouped and arranged to form a roof the upper ends of said sheetsbeing supported on and fixed to the upper of the cone-shaped ringsforming the central support, their lower ends being supported by andliXed to the second named ring.

2. In a roof for circular buildings the combination of a skeletonframework comprising a plurality of vertically arranged bars, a ringsecured to the lower ends of said bars, a second ring secured to theupper ends of said bars, a supplementary ring secured to said bars ashort distance below the last named ring, a central support comprisingtwo coneshaped rings arranged one above the other, means for spacingsaid rings at a suitable distance apart, a plurality of sheets adaptedto be grouped andarranged to forni a ceiling the upper ends of saidsheets being supported on the lower of the cone-shaped rings forming'thecentral support, means for securing said sheets to the central support,their lower ends resting on the supplementary ring, a plurality ofsheets kadapted to be PETER NORMAN NISSEN.

